Reinforcement for concrete arches.



No. 867,776. TATENTED CCT. 8.1907

- M. A. AEECTT.

EEINECECEMENT ECE CONCRETE ARCHES.

APPLIUATION FILED APR. 26, 1907.

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` M. A. ABBoTT.

' RBINEORGBMENT PO-R'GONCRETE ARCHES.

' APPLICATION I'ILED APR. 28, 1907.

2 SHEETS-SHEET 2. F'l 5 5 ATTORNEYS THE Namals PETERS fo., wAsmNaroNfv.r.

MARTIN ALLEN ABBOTT, OF CHRISNEY, INDIANA.

REINFORCEMENT FOR CONCRETE ARCHES.

No. 867,776. -l l Specification of Letters Patent.

Patented Oct. 8, 1907.

Appiimion'iea Appli 26.1907. serial No. 370,446.

To all whom it may concern: v

Be it known that I, MARTIN A. ABBOTT, a citizen of the United States,and a resident of Chrisney, in the county of Spencer and State ofIndiana, have invented a new and useful Reinforcement for ConcreteArches, of which the following is a full, clear, and exact description.

This invention relates to certain improvements in metal reinforcementsfor concrete arches, and the object of the invention is to provide astructure easily and quickly-assembled, readily bent to the desiredform, and provided with means to restrain itin place while the concreteis being applied and hardening. A further object of the invention is toprovide a reinforcement for arches, comprising a single structure ofmetal bars, which forms not only the arch but the spandrels,balustr'ades, wing walls, and floor.

The invention consists in certain features of construction andcombination of parts, all of which will be fully set forth hereinafterand particularly pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar charactersof referenceindicatecorrespondingr parts in all the figures, and in which i Figure l is aplan view of the complete reinforcing structure; Fig. 2 is a verticalsection taken on the line 2-2 of Fig. 1, and showing in dotted lines theoutlines of the concrete to befapplied thereto; Fig. 3 is an end view,parts being shown in section on the line 3 3 of Fig. l, and Figs. 4 and5 are sectional details taken on the lines 4-4 and 5-5 of Figs. 3 and 2,respectively.

In my improved reinforcement, I provide a plurality of reinforcing rings10 curved to the form required for the arch, and having a plurality offioor straps 11 extending across the base of the arch to form a chord ofthe arc and prevent the base of the reinforcing rings 10 from spreadingapart. The lower end 12 of each reinforcing ring is preferably bentoutward to lie in a substantially horizontal plane, and each end of eachfloor strap 1l is bent upward and backward to forma hook 13 to receivethe horizontally disposed end of each reinforcing ring and effectivelyprevent the ends of the rings 10 from spreading apart. To hold the ringsin substantially parallel positions, and prevent lateral movementthereof while the concrete is being applied, I provide a plurality oflongitudinally disposed bars 14 lying adjacent the ends 12 of each ringand also inclosed within the hook-shaped ends 13 of the `door straps 1l,as is clearly illustrated in Fig. 5. The intermediate reinforcing ringsneed not necessarily be riveted or bolted, but may be held from lateralmovement by mere frictional engagement with the bars 14. In addition tothe longitudinally disposed bars 14 at the ends of the reinforcingrings, I preferably provide a longitudinally disposed bar 16, extendingalong the To form the spandrels and the balustrades, I prefl erablyprovide uprights 18 adjacent each end of each terminalreinforcing ring10, and for holding the same in place I preferably bend the lower endthereof to form a laterally disposed portion 19 adapted for e117gagement Within the hook end 13 of the floor straps 11 and be rigidlyheld in place thereby. These uprights 18 at the level of the top of thearch are provided with outwardly bent portions 20 serving to formrecesses within which are rigidly secured two lateral bars 21, and theends of the uprights extend a short distance above these bars to theheight desired for the balustrade. The bars 2l serve to prevent the.uprights 18 from spreading apart intermediate their ends, and as eachis secured to the top of its corre. sponding reinforcing ring by meansof a rivet o1' bolt 22, the two uprights 18 are held in verticalpositions and symmetrical in respect to each other.` A second lateralbar 23 is supported directly above and parallel to eacli lateral bar 21,and serves to form a reinforcement for the balustrade and to hold theupper ends of the uprights in the desired position. Preferably, theupper end of each upright is bent outward' and then inward to form arecess 24, as indicated in Fig. 3, and serving to receive the ends ofthe bars 23. For increasing the height of the balustrade, I preferablyprovide small vertically disposed reinforcing bars 25, havinghook-shaped lower ends adapted to inclose and frictionally engage withthe bars 23 and extend upward to a distance determined by the desiredheight of the balustrade. Any number of these balustrade reinforcingbars may be employed, and by securing them to the lateral bars 23 in themanner illustrated in Fig. 4, I avoid the necessity for the use of anybolts or rivets. For holding the lateral bars 23 in the desiredposition, I preferably provide each of the longitudinally disposedreinforcing bars 16 and 17 with end portions bent at right anglesthereto and extending upward 'radially from the reinforcing rings 10.These end portions 26 have their upper ends provided with inwardlyturned hooked portions 27 inclosing the bars 23 and frictionallyengaging therewith, as is more clearly indicated in Fig. 2.

In order to form the wing walls, I provide the base longitudinallydisposed bars 14 with end reinforcing rings, and, if desired, bentupward at any suitable angle to the plane of the floor straps 11. Theouter ends of these end portions 28 are supported and held rigidbyconnecting links 29, each of which has one end thereof provided With ahooked portion 30 inclosing the end 28, and a second hooked portion 31inclosing the corresponding` upright 18. These Wing Wall reinforcements28 and 2,9 may lie in planes parallel to the axis of the arch, asindicated in Fig. 2, or may be bent outward at any desired angle theretoaccording to the nature of the banks of the stream over Which the archis constructed.

The entire reinforcement above described is formed of metal bars easilybent to the desired shape after arriving at the scene of operations, andas most of the parts are held in engagement With eachother merely byfrictional contact, very few bolts, rivets, or other securing means needbe employed. The reinforcing rings are effectively held from spreadingat their bases and are held from longitudinal movement by the interwovenbars 16 and 1'7. The spandrels are reinforced by the uprights 1S and theend portions 2G of the bars 17, While the balnstrades are reinforced andsupported not only by lthe uprights 1S, but also by the end portions 2Gof the longitudinally disposed bars, the lateral bars 23 and verticallydisposed members 25 carried tlierebyi After the structure abovedescribed is secured in place, concrete is applied thereto to form thearch, spandrels, balustrades, wing Walls and floor, as is indicated indotted lines in Fig. 2Q The concrete may be applied to any thicknessdesired, and after having I been allowed to harden is effectivelyreinforced in all these parts. The ends of the floor may be turnedfdownward, if desired, as is indicated in Fig. 2, and

the concrete forming the balnstrades may be provided With any suitableornamental design.

`for preventing the latter from spreading, and a plurality .o'flongitudinally disposed reinforcing hars interwoven yacross said rings.

3. A reinforcement for concrete arches, comprising a v.plurality ofreinforcing rings, a floor .strap having inturned ends adapted to engagewith the ends of said rings for preventing the latter from spreading,and a plurality of longitudinally disposed reinforcing hars interwovenhetWeen said rings.

4. A reinforcement for concrete arches, comprising` a plurality ofreinforcing rings, floor straps connecting the ends thereof, and aplurality of longitudinally disposed reinforcing straps interwovenbetween said rings.

5. A reinforcement for concrete arches, comprising a plurality ofreinforcing rings, and longitudinally disposed bars connecting the baseportions of said rings, said longitudinally disposed bars havingoutwardly extending portions adapted to reinforce the wing walls.

G. A reinforcement for concrete arches, comprising a plurality ofreinforcing rings, longitudinally disposed reinforcing bars connectingthe hase portions of said rings and having outwardly and upwardlyextending end por tions, and links connected to said end portions andforming therewith reinforcelnent for the wing walls,

7. A reinforcement', for concrete arches. comprising a, plurality ofreinforcing rings, longitudinally disposed hars connecting said rings,uprights secured to the end portions of each of the end rings, and meansconnecting said nprights to form reinforcements for the spandrels.

S. A reinforcement for concrete arches. comprising :t plurality ofreinforcingl rings. nprights extending upward from the end portions ofthe end rings. lateral bars con necting said uprights, and halnstradereinforeements eon nected to said lateral hars.

tl. A reinforcement for concrete arches, comprising a plurality ofreinforcing rings, nprights extending upward froln the end portions ofthe end rings. lateral hars connecting said upriglits, and a pluralityof longitmlinally disposed reinforcing' bars connecting .said rings andhaving end portions extending upward into engagement with said lateralhai for forming a reinforcement for the spandrels and hala ades.

10. A reinforcement for concrete arches, comprising a plurality ofreinforcing rings, laterally disposed bars connecting the hase portionsof said rings and having outwardly and upwardly extending end portions.nprights connected to thc end portions of the end rings, and linksconnecting the said uprights and the end portions of said longitudinallydisposed hars and forming a reinforcement for the wing walls.

11. t reinforcement for concrete arches. comprising a plurality ofreinforcing rings, a plurality of floor straps engaging with the endsthereof to prevent said ringsl from spreading. and a plurality oflongitudinally disposed-hars in engagement; with said rings forpreventingl longitudinal movement thereof.

12. A reinforcement for concrete arches. comprisingl a plurality ofreinforcing rings, a plurality of tloor straps engaging therewith to`prevent; said rings from spreading. a plurality of longitudinallydisposed hars in engagement with said rings for preventing longitudinalmovement thereof, a plurality of uprights, lateral hars connecting`-said uprights, and extensions in engagement with said hars andforming.;l reinforcenwnt for the halustrades.

ln testimony whereof l have signed my inline to this specification inthe presence of two subscribing witness s.

